JPS60150502A - Conductor for device and method of producing same - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Technical Field) The present invention relates to a conductor used between or within equipment such as electrical equipment or electronic equipment.

(Background Art) In electrical connections between or within equipment such as electronic equipment, medical equipment, and audio equipment, along with the demand for smaller and lighter equipment, the electric wires used are becoming increasingly thinner and mechanically too,
Electrically, the required characteristics are becoming increasingly strict.

(In shallow areas, wires are hard to break due to tensile force or repeated bending during wiring and use, and electrically, high-rise
- High efficiency is required, that is, at least the outer periphery of the conductor is required to be highly conductive, and from the viewpoint of improving workability, the product is required to be flexible.

Conventionally, the following conductors have been used as these conductors, but each has the following drawbacks.

For example, thin copper wires made of tough pitch copper, oxygen-free copper, etc. are usually softened during hot-dip tin plating even if hard copper wires are used. This results in an annealed copper wire that lacks mechanical strength.

Even if it is not softened (not plated), it will still lack flexibility.

For example, wires made of work-hardening alloys such as Cu-3n and Cu-Zn threads have strength, but generally have low conductivity.
The efficiency of the high frequency signal is low and it is not flexible.

For example, wires made of age-hardening alloys such as Cu-Be, Cu-Cr, and Cu-Zr have good mechanical properties, with good strength and flexibility, if properly tempered. , when the final size is =++, heat death 1v (i) for thermal refining is difficult and variations in properties tend to increase.Furthermore, intermediate annealing during processing into a thin wire tends to involve repetition.

In copper-coated iron <, M4) wires, at softening temperatures where the presence of iron is reliable in terms of magnetic properties, a problem arises in which the wires come into close contact.

” - As mentioned above, the most advanced conductor is ``electronic wire.''
It was unsuitable as a conductor for silk wires.

(Disclosure of the Invention) The present invention has been made in view of the above-mentioned circumstances, and has high strength and flexibility by combining the outer properties of the composite phase and the properties of thought, and has high-frequency signals. It is an object of the present invention to provide a conductor that has high efficiency and is easy to manufacture, and a method for manufacturing the same.

A first aspect of the present invention provides an outer cover made of copper and the above-described 1.
This is an equipment conductor characterized by # and ¥ having a core material made of a copper alloy that has a higher softening temperature and greater strength than d.

The second invention of the present invention is to reduce the final size of the conductor to 1φζ, which consists of an outer sheath configured as '@:j and a core material made of a copper alloy that has a higher softening temperature and greater strength than the previous record. , a method for manufacturing a conductor for equipment, characterized in that only the outer coating is softened by heating by immersion in a plating bath during hot-dip plating with the size.

The conductor of the present invention can be used for computers, OA equipment, communication equipment,
A conductor used for connections, wiring, etc. between or within electrical or electronic equipment such as medical equipment and audio equipment, and is made of a single wire or a stranded wire made by twisting multiple of these wires, and the cross-sectional shape of the single wire is , a circle, an ellipse, a square, other polygons, and other irregular shapes.

In the present invention, the copper constituting the outer sheath is pure copper called electrical copper, such as tough pitch copper, oxygen-free copper, and deoxidized copper.

The copper alloy constituting the core material is a copper alloy having a higher softening temperature and greater strength than the above-mentioned copper, such as brass, red copper, phosphor bronze, beryllium copper, silicon copper, cupronickel, and the like.

The conductor of the present invention can be used as a composite wire or (d) stranded wire consisting of the above-mentioned jacket wire and core wire, but also solder wire (f).
:In order to improve the connectivity of these composite wires, the second half of this composite wire is often plated with tin, half-moon, etc.

FIGS. 1 to 3 are sectional views each not showing an embodiment of the conductor of the present invention. In FIG. 1, a tough pitch copper 2 is wrapped around the brass wire 1 as an outer covering A.

In FIG. 2, oxygen-free copper 4 is coated around the phosphor-bound copper wire 3 as an external wave protector, and a tin plating layer 5 is further plated to the north. In FIG. 3, oxygen-free copper 7 is coated around the bare IJ IJ copper wire 6 as an outer covering material, and a tin plating layer 8 is further plated thereon.

The conductor of the present invention is composed of the above-mentioned core material and the outer layer has high conductivity, so the efficiency of high frequency signals is high, and the outer layer is soft, so it is flexible. Since wire wire has high strength, it is difficult to break due to simple tensile force, and has excellent characteristics as an electric wire for equipment.

Next, in order to manufacture the conductor of the present invention, the conventional method of coating a colored outer covering material around the core, the vibrator fitting method, the copper plating method, the extrusion coating method, the copper tape around the core () in the form of a pipe, etc. A method such as molding and crimping is used.

In this case, since the copper of the outer sheath has good workability and is easy to join with copper alloys, it is easy to manufacture the composite phase, and the subsequent area reduction processing such as wire drawing is also easy, and usually aging precipitation etc. Multi-axial heat treatment is not required. In addition, since the strength of the core is greater than that of the outer shell, it is possible to obtain a core material whose strength is much higher than that of the outer shell.

Further, the composite conductor of the final size is subjected to a softening treatment if necessary, so that only the copper in the outer sheath is softened to increase flexibility, and the copper alloy in the core is hardly softened to maintain its strength. This softening may be achieved by applying electricity 9 or by heating using a tube furnace or the like.

Next, tin 1. When applying hot-dip plating such as solder, the wire is heated by immersion in a hot-dip plating bath, so only copper (e.g., tough pitch copper, oxygen-free copper, etc.) that softens at relatively low temperatures due to external waves) is a hard material. The copper alloy of the core is softened even when the copper alloy of the core is softened. The temperature is 1Mi degree.

According to the manufacturing method of the present invention, properties that meet the final required properties can be obtained during hot-dip plating, so there is no need to perform a separate softening treatment for the final size, and this step can be omitted.

In addition, if the above-mentioned monomerization effect cannot be obtained by hot-dip plating alone, a softening treatment as described above can be performed separately before hot-dip plating. Vickers hardness is 50
~100, also that of core H (d 1.00 is preferably increased by 4).

(Example) A composite material with an outer diameter of 10 mm, which was made by fitting and covering a tough pitch copper tube onto a brass (Cu 70%-Zn 30%) rod, was wire-drawn and subjected to intermediate annealing for 2 hours at 450° at a diameter of 16 mm. 1 out of 1 gland force was applied with a 0.1 muφ diameter.

This wire was subjected to softening treatment, and only the tough pitch copper of the paulownia sheath was softened (φ) under the condition that the brass core material was large and the strength was not reduced, and a conductor Iσl according to the present invention as shown in Fig. 1 was created. .

An oxygen-free copper tape was formed into a pipe shape around a phosphor bronze wire, the seam was welded, and the wire was fitted and drawn to create a composite material with an outer diameter of 8 mm and a core diameter of 6 mm. This composite phase is 2.6
It was subjected to intermediate annealing (11f adhesion improvement treatment) for 4 hours and elongated to 0.05 mmφ.

This wire is tin-plated at a hot-dip bath temperature of 280''C using an ordinary continuous plating device, so that only the oxygen-free copper in the outer layer is softened, and a conductor 1&
2 was created.

In addition, during the manufacturing process of these conductors i; r, and σ2,
There were fewer occurrences of wire breakage, less troublesome heat treatment, and manufacturing was easy.

In the same manner as the conductor tG2, a 0.05 mm diameter tin-plated oxygen-free copper coated beryllium copper wire (conductor σ3 according to the present invention) as shown in FIG. 3 was produced.

The tensile strength and micro-Vickers hardness of the obtained conductor are as shown in Table 1.

Table 1 From Table 1, it can be seen that all of the specimens have high tensile strength, have soft outer sheathing and flexibility, and have high core hardness.

Next, seven conductors each of lc2 and σ3 were twisted together to create a stranded wire conductor.

A stranded wire conductor using σ2 is coated with vinyl insulation, and VT
When used for wiring between the R main unit and the camera, the conductor is efficient, light, and flexible, and does not easily break even when repeatedly bent.The outer jacket material has high conductivity, making it ideal for transmitting high-frequency signals. We also obtained high trust from students.

A stranded wire conductor using σ3 is coated with a flexible vinyl insulation coating, and when used in the oxygen sensor part and main body rho cord of medical equipment, it is flexible, has a certain degree of precepts, and is electrically reliable. It was a highly conductive conductor.

(Invention ■ Effects) The device conductor of the present invention configured as described above has the following effects.

(a) Since the cover material is made of copper and the core material is made of a copper alloy that has a higher softening temperature and greater strength than the copper, the core material has high strength, the strength of the conductor is high, and wire breakage is less likely to occur. <、
In addition, because the outer covering material is soft and has high elongation, the conductor is flexible and resistant to repeated bending, and because the outer covering material has high conductivity,
The efficiency of high-frequency signals is high, and since there is no iron or the like, there is no negative magnetic effect.

(b) Copper for the outer covering material and copper alloy for the core material are easy to join;
It is easy to reduce the area as a composite material, and since only the wJ of the outer jacket material can be softened by softening treatment, it is easy to heat it to the final size, and there is no need for troublesome heat treatment such as aging treatment. , the conductor is easy to manufacture.

The method for manufacturing a device conductor of the present invention configured as described above has the following effects.

The final size of the conductor configured as described above is softened by heating by immersion in a plating bath during hot-dip plating at that size, so that only the outer cover material is softened, and the core material is hardly softened. A conductor that is flexible and meets the required characteristics of high strength can be easily obtained, does not require a separate softening treatment, and can omit a process.

[Brief explanation of drawings]

1 to 3 are cross-sectional views showing embodiments of the conductor of the present invention. DESCRIPTION OF SYMBOLS 1... Brass 1 wire, 2... Tough pitch copper, 3... Phosphor bronze gland, 4.7... Oxygen-free copper wire, 5, 8... Tin plating layer, 6 Beryllium copper wire. 7? IV side) C) 2 3 ~ 4 5 . 6 7 shi8

Claims (4)

[Claims] (1) A conductor for equipment comprising an outer sheath made of copper and a core made of a copper alloy having a higher softening temperature and greater strength than the copper. (2) The outer coating has a microbits hardness of 50 to 1.00.
1. The @vessel conductor according to claim 1, wherein the conductor has a core thickness of <100. (3) The device conductor according to claim 1 or 2, wherein the outer covering layer has a plating layer made of solder. (4) One reduction in the final size of the conductor, which consists of an outer sheath made of copper and a core made of an alloy with a higher softening temperature and greater strength than NiJ copper, is carried out by hot-dip plating at that size. A method for manufacturing 14 pieces for equipment, characterized in that only the outer cover H is softened by heating by immersion in a plating bath.